magnetic properties of white cement

In this study, the rheological properties of cementitious paste with water-to-cement (w/c) ratio of 0.4 and nano-Fe 3 O 4 content of 3% are first measured under magnetic field. Experimental results show that the shear stress of the cementitious paste under an external magnetic field of 0.5 T is lower than that obtained without magnetic field.

Properties of white cement concrete: The initial setting time is 100 minutes. The fineness of white cement is 395 kg / m 2. The brightness of white cement is 87%. The compact density of white density is 3150 kg / m3. The bulk density of white cement is 110 kg / 3. Compressive strength after 1 day is 21 MPa, 2 days is 38 MPa, 7 days is 61 MPa ...

The introduction of magnetic particles into cement matrices has also been another important method in recent years to enhance the mechanical and other properties of cement-based materials.

Abstract. Enhanced functional properties of cement pastes were achieved by introducing hard magnetic powders (NdFeB) into cement mixtures. The magnetic cement (cementitious magnet) employed a simple and inexpensive cementitious process to form complex NdFeB magnet shapes. NdFeB particles were distributed uniformly in the …

Properties of white cement concrete. The initial setting time of white cement is 100 minutes. The fineness of white cement is 395 kg/m 2. The brightness of white cement is 87%. The compact density of …

Magnetite was found to play an effective role in reinforcing cement matrix. The results showed that the cement paste reinforced by magnetite nanoparticles of …

The contact between the Steel Fiber and graphite is improved to make electrically conductive concrete. The strength is gained continuously till 3% where the maximum strength is gained which is 9. ...

WHAT IS WHITE CEMENT Cement is a powdery material which hardens when mixed with water. It serves as binder for natural and artificially processed aggregates, such as sand …

Samples of micro-silica/cement containing iron oxide, Fe 2 O 3, and doped with carbon-coated cobalt nanoparticles and free radical DPPH were prepared and studied by the magnetic resonance method.The concrete's main components (silica and cement) produced very complicated FMR/EPR (ferromagnetic and electron paramagnetic …

The chemical and microstructural changes within a white cement paste were characterized in situ using proton nuclear magnetic resonance spin–spin relaxation at 30 MHz, and X-ray diffraction.

In this paper, the mechanical properties of white Portland cement (WPC) paste mixed with basalt fiber (BF) were analyzed and its electromagnetic properties were fully investigated. First, the fluidity and strength of WPC pastes with different BF contents were tested. See more

The properties of white cement. The whiteness is understandably one of the most important properties of white cement. This must be taken into account already in the selection of …

White Cement. White portland cement has essentially the same properties as gray cement, except for color. It is readily available throughout North America. The color of white cement is determined by …

Effect of hydration time on the structural and physical properties of White Portland Cement (WPC) is considered to be a critical and essential factor. In this study effect of hydration time (360, 720, 1260, and 1450) min on the dielectric, electromagnetic shielding and piezoelectric properties of WPC at room temperature were investigated.

¹H nuclear magnetic resonance (NMR) relaxometry is used to characterise cement paste microstructure from the stand point of the pore water. Attention focuses primarily on pore-water interactions and the morphology of calcium-silicate-hydrate (C-S-H), the active phase of cement paste. The method is non-destructive and non-invasive.

This study characterized the magnetic property and levels of heavy metals of the topsoils near a cement plant. The concentrations of five selected heavy metals (Pb, Cu, Zn and Cd) were measured on ...

Similarly, ultrasonic non-destructive testing of concrete shows that compared to ordinary concrete, magnetized water concrete has a denser internal …

Chemical Properties of Cement. The raw materials for cement production are limestone (calcium), sand or clay (silicon), bauxite (aluminum) and iron ore, and may include shells, chalk, marl, shale, clay, blast furnace slag, slate. Chemical analysis of cement raw materials provides insight into the chemical properties of cement.

Research on cementitious materials, the most common building material, has been going on for over a century [1, 2].In the study of the mechanical and other properties of cementitious materials, it has been found that the water-cement ratio is an important factor affecting the strength of the material [].Normally, the smaller the water-cement …

The dynamic pore structure of partially saturated cement-based material is rather essential to quantify its mass transport and many other properties. To clarify the influence of water removal and re-entry, the low-field nuclear magnetic resonance technique is employed to characterize the pore structure of two white cement mortars …

This paper investigated the electromagnetic shielding properties and the mechanisms of tricalcium silicate (C 3 S) paste with three water-cement (W/C) ratios after long-term curing. The C 3 S pastes with three W/C ratios were tested by XRD and other tests for the qualitative and quantitative analysis of the individual phases. The …

Mineral admixtures (MA), like fly ash (FA), silica fume (SF), and slag (S), are usually added to cement-based materials to improve their compactness and further enhance their mechanical properties, permeability resistance, and durability. In this study, low-field nuclear magnetic resonance (LF-NMR) is adopted to explore the evolution of …

magnetic properties of white cement T04:01:28+00:00 Enhancement of electromagnetic shielding and Effect of hydration time on the structural and physical properties of White Portland Cement (WPC) is considered to be a critical and essential factor In this study effect of hydration time (360, 720, 1260, and 1450) min on the …

The first research and testing on the utilisation of a magnetic field to produce concrete for military constructions began in Russia in 1962. Due to the influence of a magnetic field, the mass is decreased from 13 molecules to 5 or 6 molecules.Due to the smaller and less dense clusters in magnetic water compared to conventional water, the …

Samples of micro-silica/cement containing iron oxide, Fe2O3, and doped with carbon-coated cobalt nanoparticles and free radical DPPH were prepared and studied by the magnetic resonance method. The concrete's main components (silica and cement) produced very …

In this paper, a three-layered cement-based wave-absorbing board is designed and prepared by mixing wave-absorbing fillers such as nano-Si 3 N 4, multi-layer nano graphene platelets (NGPs), nano-Ni, carbon fiber (CF) and carbon black (CB) into cement slurry. The effect of the amount of wave-absorbing fillers on the mechanical properties, …

1757-899X/1219/1/012051. Abstract. The incorporation of strong magnetic powders (NdFeB) into cement mixtures has produced improved mechanical properties of …

In white cement, the whiteness index is a very important parameter to control. ... A profile refinement method for nuclear and magnetic structures. Journal of Applied Crystallography ... Derriche Z. Influence of NaF, KF and CaF2 addition on the clinker burning temperature and its properties. Comptes Rendus Chimie. 2006; 9 …

The content of selected elements (Al, As, Ca, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, S, Ti, V and Zn) was measured in samples of the lichen Evernia prunastri exposed for 30, 90 and 180 days around a cement mill, limestone and basalt quarries and urban and agricultural areas in SW Slovakia. Lichens transplanted around the investigated quarries …

A novel type of cement-based composite with preferentially orientated nickel-coated carbon nanotubes (Ni-CNTs) was fabricated by induction of magnetic field (MF) method for piezoresistive sensor in structural health monitoring system.The microstructures of Ni-CNTs and their aligned features in the as-fabricated composites were observed by …

The mixture made of 50% slag and 50% white Portland cement showed, on average, compressive resistance levels between 35 MPa and 60 MPa, electrical resistivity values that were approximately five ...

1. Introduction. Modern construction requires modern and nontraditional techniques to produce enhanced properties for the materials. Many researches have been conducted recently by manipulating concrete mixing water before conducting mixing; one of these methods is treating water with different magnetic flux densities and recording …

6 Important Properties of White Cement: The initial setting time is 100 minutes of white cement. The fineness is 395 kg/m2 of white cement. The brightness of white cement is 87%. The compact density is 3150 kg/m3 of white density. The bulk density is 110 kg/3 of white cement. After one day, the compressive strength was 21 …

The micromechanical properties of Portland cement paste were investigated by the coupled nanoindentation and scanning electron microscope method. The mechanical parameters (e.g. indentation modulus and hardness) of individual active phases present in Portland cement paste were estimated by the proposed method.

Complex and net shaped NdFeB magnets were easily obtained. The resulting cementitious formed magnets can be considered a magnetic cement, i.e., a cement …

Properties of White Portland Cement: It has properties similar to grey Portland cement, like high strength, durability, water and chemical resistance. However, white cement also has some unique properties that make it suitable for certain applications. Some of the properties of white cement are: Colour: The main property of …

Physiochemical properties of magnetized water (MW) were presented. •. Magnetized water can enhance mechanical and durability properties of cementitious …

Understanding the influence of magnetic fields on the rheological behavior of flowing cement paste is of great importance to achieve active rheology control during concrete pumping. In this study, …

Nanosilica (NS) behavior on hydration and synergistic characteristics of highly alkaline (HA) white cement pastes composites containing 5–25 mass % of NS (as substitution) was studied. The hydration kinetics behavior from 1 to 100 days was examined for all the blends e.g.: whiteness reflection (Ry), setting, compressive mechanical …